1 to 10 hour timer, playing a melody after the delay.

Switch on and the unit beeps and begins timing for one hour.

 

Switch on with the button pressed, then release, and the unit beeps twice. After another couple of seconds there would be two rapid beeps and the unit would time for two hours. repeated presses of the first stage up to ten will create a delay of up to ten hours.

 

After the delay, a few bars of Tchaikovski's 1812 Overture are played.

 

For demonstration, if the button is pressed at power-on and released after a few seconds (led lights), the melody plays for demonstration.

 

The module can play two octaves at the moment. A second melody may be added also, where a very long press of the button would select the alternate melody, and save to NV RAM.

 

demo video